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Paid more tax this month?

Hello!

Hope someone can help me with this!

I have been with my company for 5 months now. I have always been on tax code 810L.

This month, I paid £135 more tax. My tax code still shows 810L, but my tax basis has changed from Month1 to Cumulative. Is this the reason for the increase?

Not a nice surprise :(

Comments

  • chrisbur
    chrisbur Posts: 4,295 Forumite
    Part of the Furniture 1,000 Posts Photogenic Name Dropper
    pauladee wrote: »
    Hello!

    Hope someone can help me with this!

    I have been with my company for 5 months now. I have always been on tax code 810L.

    This month, I paid £135 more tax. My tax code still shows 810L, but my tax basis has changed from Month1 to Cumulative. Is this the reason for the increase?

    Not a nice surprise :(

    This amount sounds like the tax due on one months tax allowance so my guess would be that when you changed jobs there was a month when both your old employer and new employer gave you a tax allowance. The change to a cumulative tax code has corrected this underpayemnt.
    To check this for certain would need details of P45 and your wages recieved so afr from new employer.
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